OpenStax, Elementary Algebra 2e §8.9 Use Direct and Inverse Variation · Review Exercise 142 · Algebra · Rational expressions
Use Direct and Inverse Variation · Review Exercise 142
Solve.
Sue and Deb work together writing a book that takes them 90 days. If Sue worked alone it would take her 120 days. How long would it take Deb to write the book alone?
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OpenStax, Elementary Algebra 2e · §8.9 Use Direct and Inverse Variation · Review Exercise 142
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